frost-protected shallow foundation


Also found in: Encyclopedia.

frost-protected shallow foundation

A construction method that uses insulation and drainage to artificially raise the frost line of soil to a level that allows relatively short—shallow—foundations.In cold climates,building foundations must extend below the frost line to a depth of soil that does not freeze. Freezing causes soil to heave upward and then sink back again, shifting everything on top of the soil. It does not result in a very stable building base unless one takes steps to prevent soil movement.

The Complete Real Estate Encyclopedia by Denise L. Evans, JD & O. William Evans, JD. Copyright © 2007 by The McGraw-Hill Companies, Inc.
Mentioned in ?
References in periodicals archive ?
One that has prevailed is the frost-protected shallow foundation, or FPSF, for slab-on-grade homes.
Examples of these techniques (all of which are code approved) include advanced framing, raised-heel trusses, airtight drywall approach, frost-protected shallow foundations, and optimizing window design.
FROST-PROTECTED SHALLOW FOUNDATIONS, or FPSFs, provide protection against frost damage without the need for excavating below the frost line.